Ventilator



April 25, 1933.

R. H. sTEvl-:Ns l,905,010

VENTILATOR Filed April 17, 1931 z 2%r 20,217 Z i! .13

Patented Apr. 25, 1933 g I 1,905,0io

UNITED STATES PATJENT QFFICE v RICHARD H. srEvENs, or BALUMOREMARYLAND, AssIGNon To BETHLEHEM s'r'EEL i l.

COMPANY, A CORPORATION OF PENNSYLVANIA VENTILATOR My invention relates to the ventilation of buildings and more particularly to that type of building, such as enclosed steel mills, foundries, chemical plants, and the like,

45 wherein vitiated air, noxious or offensive gases, vapors, and the like are developed and require to be removed as rapidly and as continuously as possible.

The object of this invention is to provide in '-10 buildings means which acting in conjunction with natural air currents obtains the rapid and continuous withdrawal from said buildings of vitiated air, gases, vapors and the like, regardless of in what direction the "15 natural air currents are moving.

The novel features of my invention will be more fully understood from the following description and claims taken with the drawing in which:

'320 Fig. 1 illustrates diagrammatically a conventional type of mill building embodying my invention;

Fig. 2 is a cross section taken on the line 2-2 in Fig. 1;

'425 Fig. 3 is a cross section taken on theline 3-3 in Fig. 1; and

Fig. 4 is an end elevation detail in cross section similar to Fig. 3 showing a modification of the louvred openings.

(#30 Referring to the drawing:v designates the main body of the building from which vitiated air, gases and vapors, or the like, 1s to be drawn bythe action of the structure embodying my invention in conjunction with fili the natural air currents. 11 shows the embodiment of my invention superposed along the ridge of the main building roof 12, and comprises a Continuous secondary roof 13 in spaced relation to the main building roof 11.

The spaced relation is maintained by the Structural elements comprising the Vertical walls of the apertured Chambers 14, 15, and

16, together with the baflie wallsv17. The

apertured chambers 14 and 16, are the end 1.4.5 Chambers, and have louvred apertures 18 and 19 only on their inner` transverse walls, the other three walls being closed; while the intermediate apertured chamber has louvred apertures 20 and 21 in both transverse end 35.0 Walls. Though I show onlyone intermediate Application flled April 17,:1931. Serial No. 530,871.

apertured chamber 15, it is intended that xthere shall be as many such'chambersas'the size and type of building shallrequire. Also, I show louvred apertures as the preferred form, though any 'other type of aperture may be used, such as plain openings, screened openings, latticed openings, or'the like, that will permit of a flow-through of air, gases, or vapors. Each apertured chamber 14, 15, and 16 is in communication with the interior of the main building v10 by means of apertures 22 in the main roof. 7Itwill be noted that the baflles 17 divide the intervening space between the transverse end wallsl of the apertured Chambers into two transverse Chambers 23 and 24 entirely open'at both outer ends.

Fig. 4 shows a modification in the arrangementof the louvred openings. The louvred openings 25 are horizontal with openings 26 between the topmost louvre and the roofv 13. Below the line of ridg'e of roof 12 are closed sections 27. i v

From the above rdescription it is seen that I provide in a'building between two superposed Continuous roofs a series of chambers, each in communication with the interir` of the main building by meansx of apertures in the main roof; and which Chambers have their opposed transverse wallsl apertured preferably with louvred openings. Also, lI have shown that by this construction' Iget clear passageways transversely of the roofs, which are formedv of thetwo roofs and two Vopposedtransverse walls; and thatieach of these passageways I divideintwo by means of a battle-plate placed transversely of the roofs. With this arrangement the natural voutdoor air currents may approach the building from any direction, but at each transverse -passageway, by reason of the transverse baf- 1 fle-plate, the air currents are deflected and are caused to flowkparallel to, .and by,the louvred apertures of the opposed end walls of. the adjacent Chambers. This throughflow of the natural air currents past-.the louvred apertures of theadjacent chambers tends'to create a Vacuum withinthe latter, and this in turn acts to 7draw upon the fluid vcontents of the interionof the main building; and, since the air currentsare practically con- 100 Leo stant, there is a practically Constant movement of the air within the building upward and outward through the louvred end walls. Outdoor air to replenish that withdrawn is admtted to the building through the usual windows,'doors, ducts, or the like, not shown on the drawing.

From the foregoing description it will be seen that I have devised means applicable to buildings and which means are particularly suitable to maintain thorough and practically Constant ventilation of the building to which it may be applied.

While I have shown my invention in but one form, it will be obvious to those skilled signature.

RICHARD H. srEvnNs.

in theV art that it is not so limited, but is susv ceptible of various other changes and modifications without departing from the spirit thereof, and I desire, therefore that only such limitations shall be placed thereupon as are imposed by the prior art or as are specifically set forth in the appended claims.

` Having thus described my invention, what I claim as new and desire to Secure by Letters rPatent is:

1. A ventilator for a'building having an apertured roof comprising, two monitors each superposed over an aperture in the roof of said building,a Vertical transverse bafile, said monitors having their inner oppositely disposed transverse Walls apertured and'in spaced relation baifle, and a secondary roof Continuous over said monitors and said baflie.

2. ventilator for a main roof comprising, a Continuous roof 1n spaced relation to the main roof of the building, a series of monitors alternating with a series of Vertical transverse baffles in spaced relation one to another, the Structural elements of which maintain the spaced relation between the twor roofs,

building by means of apertures in the main roof and having apertures in the walls'which vsaid monitors having their inner oppositely vf disposed transverse walls apertured and in spaced relation to one another and to said baflle, and 'the said monitors and the Spaces between the said monitors and the said bafile each having a roof thereover.

and each of the monitors communicating 'with the body of said to one another and to said building having'I a v 4. A ventilator for a building having a i main rroof comprising, a series of monitors alternating with a series of'vertical transverse baffles in spaced relation one to another, each of' the said monitors and each of the spaces between the said monitors and the said baffles having a roof thereover in spaced relation to the 'main roof of the building, the

`Structural elements of the said monitors and 

